8315 L&J Tankway Software Description | TankGate Interface |
|
|
4.1.4Communications
There are two communications tasks - one for each of the communication channels. COM ports 0 and1 are used to interface to external devices or host systems. Refer to the Hardware Chapter for the location of these ports.
COM0 and COM1
COM 0 and 1 can be configured for communications to Host systems using a variety of protocols. For COM 0 and 1 the communication interfaces include the following:
•
•
•RTS/CTS lines are available for hardware handshaking.
4.1.5Protocols
The TankGate is fully compatible with FuelsManager® software. It is also compatible with a variety of other Host systems including through Modbus protocol.
The default communication settings for the COM ports are as follows:
COM Port | Protocol | Baud Rate | Data Bits | Parity | Stop Bits |
|
|
|
|
|
|
COM0 | RTU Slave or | 9600 | 8 | N | 0 |
| Modbus - Auto- |
|
|
|
|
| sensing |
|
|
|
|
|
|
|
|
|
|
COM1 | Modbus | 9600 | 8 | N | 0 |
|
|
|
|
|
|
4.1.6Data Scanning Task
The Data Scanning Task is dedicated to the scanning of field input data from tank gauges. The input data is stored in arrays that are subsequently accessed by the Point Executive.
4.1.7Database Manager
The Database Manager is a collection of programs and data. The Database Manager allows the TankGate system executive to access data from the database in an organized and
The Database Manager also contains a Database Dictionary. This dictionary describes how the database is organized and also provides information describing how data should be presented to the operator.
After
4.1.8System Tasks
System tasks include the Calendar Task, which manages Time and Date functions. Other system tasks include utility routines for checksum calculations, diagnostics,
22 | Installation and Operations Manual |